create dropdown example in laravel from existnig dropdown list -

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i want try dependent dropdown in laravel 5. in main dropdown having several lists like(electronics,automobiles) , 1 of them click or change event. want create whole dropdown . if clicked on electronics 1 dropdown automatic generated electronics.

enter image description here if clicked on electronics first dropdown list @ time dropdown automatically generated electornics. , if clicked automobiles first dropdown list should replace last automatically created dropdown electronics. 

<!doctype html> <html lang="en"> <head>   <meta charset="utf-8">   <title>dependent drop-down demo</title>   <script src="https://code.jquery.com/jquery-1.10.2.js"></script> </head> <body> <h1>dependent drop-down demo</h1> <div class="container">         {!! form::open(['url'=>'demo']  ) !!}            <div class="dropdown">         <select name="category" id="category" class=" form-control">             <option value=" "selected disabled>select category</option>             @foreach($categories $category)                 <option value='{{ $category->id }}' > {{$category->name}} </option>             @endforeach         </select>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;         <select hidden name="subcategory" id="subcategory" class=" form-control">         </select>         <select hidden name="semicategory" id="semicategory" class=" form-control">         </select>           </div>         {!! form::close() !!} </div>  <script> $("#category").on('change', function(e){      alert("test");     console.log(e);      $("#semicategory").hide();     $("#subcategory").show();     var category_id = e.target.value;     var s = $('<select />');        //ajax         $.get('/index?category_id=' + category_id, function(data){             console.log(data);             $("#subcategory").empty();             $.each(data, function(index, subcatobj){             $("#subcategory").append('<option value ="'+ subcatobj.id +'">'+subcatobj.name+'</option>');             });         });     });   $("#subcategory").on('change', function(e){         alert("hello");         console.log(e);         $("#semicategory").show();         var subcategory_id = e.target.value;         //ajax         $.get('/index1?subcategory_id=' + subcategory_id, function(data){             console.log(data);             $("#semicategory").empty();             $.each(data, function(index, subcatobj1){                 $("#semicategory").append('<option value ="'+ subcatobj1.id +'">'+subcatobj1.name+'</option>');             });         });     // $("#subcategory").hide();     }); </script> </body> </html>

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